@Wayne-TP 

Is this what you're after?

I was playing around with it yesterday (hence the Vera automation). It has always worked historically and just stopped a couple of days. I didn't change anything. I can't clock on the red exclamation mark icon for more details.

  @Wayne-TP 

Yes, I can turn the bulb on using the app and via Smartthings.

I have tested the button/switch and the bulb with other devices and they work fine. It does seem to be an integration issue between Tapo and Kasa devices as far as I can tell.

  @Wayne-TP 

I've just sent this over - I think. Might have sent it twice. 

It's been quite problematic as I have replaced the normal lightswitch with the Tapo S200B. I am having to use the the app and or another button to turn the bedroom light on and off each time I enter or leave the room.

I also tried removing the lightbulb and re-adding it, but getting the same results.

  @Wayne-TP 

This started working the same night after I sent my last message. Did you do something to fix it? Interested in what the problem was if it was you? Assuming you work for TP-Link?